Macarthur Astronomical Society

User’s Photo Gallery No 1

Astro Images

A place for your best Astro images.

Thor’s Helmet
NGC 2359, a nebula in the constellation of Canis Major. Image by Roger Powell (2025).

Thor’s Helmet
Colourful Refraction Around Sirius
The brightest star, with surrounding blue and green refraction.

Colourful Refraction Around Sirius